Hi i just recently this year started shooting benchrest at a club near me. Primarily to help zero my rifle for hft in a wind free environment. I had a s400 not doing anything, so decided to use her for benchrest. While making a hw101 up for benchrest. S400 not used for four year. Out of the bag, zero her up. shot my first card 249 2Rd 250, shot two cards every week for three weeks only dropped tree points. Total of 72 x's, Pellets straight out of the tin. Then ran out of pellets, not a problem got twenty tin of that batch. Turn up the next week to shoot, could only get 241-246 pellets all over the place. Another tin same thing five more tins same thing. So weighed them put them in to three tins 8.3, 8.4, 8.5 then size each tin. Weight/head size in to pellet trays. Then tested still all over the place. So now thinking do I treat my pellets like a fine red wine and open the tin and let them breathe for a month. Because that first tin had been open many time to test other rifles I had. So now iv clean the barrel. And still to this day can not find a pellet it like. I would really appreciate any advice. Am I missing something. I didn't release how Intense this BR can be. I'm just a 10mag zero a 30 yds and pellets that groups well at 45 yds guy.